CN203208504U - Catheter capable of being switched and guided quickly - Google Patents
Catheter capable of being switched and guided quickly Download PDFInfo
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- CN203208504U CN203208504U CN 201320161770 CN201320161770U CN203208504U CN 203208504 U CN203208504 U CN 203208504U CN 201320161770 CN201320161770 CN 201320161770 CN 201320161770 U CN201320161770 U CN 201320161770U CN 203208504 U CN203208504 U CN 203208504U
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- extension
- push rod
- guiding catheter
- macromolecular material
- quick exchange
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- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model discloses a catheter capable of being switched and guided quickly. The catheter aims at solving the technical problem that the connection portion of a pushing rod and an extending section is broken in an operation process. A tubular extending section is connected with the far end of the pushing rod, a polymer layer wraps the outside of the pushing rod, an outer layer is arranged on the extending section, the polymer layer and the outer layer are integrally connected, and the polymer layer and the outer layer are made of materials of polyurethane, polyether amide resin, epoxy resin, polyether amine or polyamide. Compared with the prior art, an identical polymer material wraps the outer layers of the pushing rod and the extending section which are connected integrally, so that the connection portion of the pushing rod and the extending section can be prevented from being broken, breaking possibility of the catheter is reduced, the outer layer is formed by connecting three to ten catheter bodies with the hardness reduced sequentially from a quick switching hole to the far end, so that the far end head of the extending section is very soft and has certain flexibility, damage to blood vessels can be avoided, and the catheter enables an operation process to be more smooth and improves operation success ratio.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of guiding catheter of percutaneous coronary intervention (pci) use.
Background technology
In recent years along with the progress of iconography equipment and the introducing of novel intervention equipment, percutaneous coronary intervention (pci) PCI has obtained development fast, but a ubiquitous problem is can not be with the support smooth delivery of power to definite lesion locations in the intervene operation process, and this has also caused the mortality of present coronary artery intervene operation 5%.And as the basic passage of PCI operation, guiding catheter has obtained using widely in the PCI operation, and the back brace power of guiding catheter is an important indicator that judges whether to finish the PCI operation.Because the trans-radial interventional therapy is than having outstanding superiority through the femoral artery treatment, so the ratio of trans-radial interventional therapy continues to rise in recent years; Yet the trans-radial interventional therapy needs guiding catheter that stronger support force is provided, and the support force that common guiding catheter provides usually is not enough to satisfy the whole surgery requirement.Also need guiding catheter that stronger support is provided through situations such as some complicated coronary artery PCI of femoral artery treatment or coronary artery origin are unusual in addition.For above-mentioned reasons, occurred a kind of can be under the situation that does not increase guiding catheter external diameter size, utilize dark method of inserting, by the length that sub-conduit stretches out female conduit, increase the primary and secondary guiding catheter of the recoil of conduit in the treatment of radial artery or femoral artery.The primary and secondary guiding catheter also can be used to aspirate thrombi, speckle and fragment under special circumstances, for the pathological changes that has serious bulk thrombosis, and when the aspirator of standard is difficult to the thrombosis sucking-off, can be by this dark method of inserting, with the sucking-off of bulk thrombosis.
In the primary and secondary guiding catheter of prior art, wherein a kind of HeartrailII " Fr5 is socketed in the conduit system among the Fr6 " that is produced by Japanese Terumo company is the most outstanding, can satisfy the dark needs of inserting guiding catheter, increasing support force in most interventional therapys, but because the structure of sub-conduit is similar to female conduit, and than the long 20cm of female conduit, in the process that it is imported female conduit, need haemostatic valve is dismantled and re-mounted, give in the whole surgery process and brought inconvenience; The another kind of sub-conduit of guideliner by the exploitation of U.S. Vascular Solution company, its main part is welded by one section Metallic rod and conduit extension, when with bigger guiding catheter during as the supporting use of female conduit, this sub-conduit directly can be sent into female conduit by the Y valve, the support force dark slotting and that double-layer tube provides of sub-conduit can be delivered to lesion locations smoothly with sacculus or support.Compare with the HeartrailII conduit system, this sub-conduit more convenient operation in operation process, obviously outstanding support force effect especially when treating, trans-radial is arranged, but the weld of Metallic rod and catheter proximal end extension easily ruptures, and misoperation causes blood vessel to be damaged easily in the operation process.
Summary of the invention
The purpose of this utility model provides a kind of quick exchange guiding catheter, and the technical problem that solve is to rupture in the junction that prevents push rod and extension in operation process.
This utility model is by the following technical solutions: a kind of quick exchange guiding catheter, comprise push rod, the far-end of push rod is connected with the extension of tubulose, described push rod is coated with polymeric layer, the extension is provided with skin, polymeric layer is connected with the outer one that forms, described polymeric layer and outer nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or the polyamide material of adopting.
Push rod of the present utility model is made up of the mandrel of inside and the polymeric layer that is coated on outside the mandrel.
The body of extension of the present utility model is made of skin, intermediate layer and internal layer; Described skin) connected to form by three to ten sections pipe shafts that hardness reduces successively from the near-end to the far-end, the length of pipe shaft is 1-300mm, and the body wall thickness is 0.03-0.2mm; Described intermediate layer is stainless steel silk or the nitinol alloy wire mesh grid of count 20-150 pixel/inch, and to far-end, establishment density is successively decreased successively from near-end; Described internal layer adopts politef, polyethylene, nylon or nylon elastomer.
Polymeric layer of the present utility model is identical with the hardness of outer near-end.
Mesh grid of the present utility model is that the round braided wires of 0.015-0.1mm and thickness are that 0.01-0.05mm, width are that the flat braided wires mixed weaving of 0.03-0.2mm forms by diameter, or mesh grid is that 0.01-0.05mm, width are that the flat braided wires braiding of 0.03-0.2mm forms by thickness.
The mouth of pipe of extension of the present utility model near-end and push rod junction is quick exchange hole, fast the axis of the normal on the plane that forms of the mouth of pipe of exchange hole and extension along distal direction in obtuse angle, the end tube wall of extension near-end and the far-end of push rod are connected smoothly; The radius of curvature in described push rod cross section is identical with the radius of extension pipe shaft.
Plane and extension axis normal that the distal end mouth of pipe of extension of the present utility model constitutes, the external hydrophilic coating that scribbles of the distal tube of extension.
Hydrophilic coating of the present utility model is end table double-decker, and primer adopts the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material; Described polyesters macromolecular material is polyurethane or Merlon; Described polyethers macromolecular material is polyether polyol or EU; Described skin-material adopts macromolecular material or natural macromolecular material and derivant thereof; Described macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams; Described natural macromolecular material and derivant thereof are chitin, chitosan or agarose; Described skin depth is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.
The length of hydrophilic coating of the present utility model is 50-500mm.
The near-end of push rod of the present utility model is connected with catheter block, is equipped with heat-shrink tube outside catheter block and the push rod junction; Described push rod is provided with first Marking ring apart from the distal portion 400mm place of catheter block, is provided with second Marking ring at the first Marking ring far-end 100mm place that is separated by, and first Marking ring and second Marking ring adopt platinum or iridium metals material to make.
This utility model compared with prior art, the skin of push rod is coated with the outer identical polymeric material with the extension, link into an integrated entity, can prevent that both junctions from rupturing, reduce the probability of conduit rupture, the extension adopts trilaminate material compound, the intermediate layer is to far-end from near-end, the mesh grid that establishment density is successively decreased successively, skin is formed by connecting from quick exchange hole to distal end by three to ten sections pipe shafts that hardness reduces successively, make that extension far-end head end is very soft and have certain motility, can avoid the damage to blood vessel, make operation process more smooth, the extension distal end adopts straight peen and is coated with hydrophilic coating, can make guiding catheter easily coaxial with the arteria coronaria mouth, minimizing improves the success rate of operation to the damage of arteria coronaria mouth, and sacculus or support can enter the extension smoothly by quick exchange hole, also can be used as simultaneously a kind of aspirator and use, be used for thrombosis, the extraction of speckle and fragment.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged drawing at A place among Fig. 1.
Fig. 3 is the enlarged drawing at B place among Fig. 1.
Fig. 4 is the cross-sectional view of this utility model push rod.
Fig. 5 is the cross-sectional view of first kind of form of presentation in intermediate layer of the present utility model.
Fig. 6 is the cross-sectional view of second kind of preparation method in intermediate layer of the present utility model.
Fig. 7 is the longitudinal section of this utility model extension.
The specific embodiment
Below in conjunction with drawings and Examples the technical solution of the utility model is described in further detail.
As shown in Figure 1, quick exchange guiding catheter of the present utility model is connected with catheter block 1, push rod 3 and extension 4 in turn from near-end to far-end.Be equipped with heat-shrink tube 2 outside catheter block 1 and push rod 3 junctions.
Plane and extension 4 axis normal (straight peen) that the distal end mouth of pipe of extension 4 constitutes.
The external hydrophilic coating 16 that scribbles of the distal tube of extension 4, hydrophilic coating 16 is 50-500mm along the length of body.Hydrophilic coating is end table double-decker, and primer adopts the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material.The polyesters macromolecular material is polyurethane or Merlon.The polyethers macromolecular material is polyether polyol or EU.Skin-material adopts macromolecular material or natural macromolecular material and derivant thereof.Macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams, and natural macromolecular material and derivant thereof are chitin, chitosan or agarose.Adopting solution to apply drying obtains.Solvent adopts N, in dinethylformamide, oxolane, ethyl acetate, butyl acetate, butanone, dehydrated alcohol, isopropyl alcohol, acetone, chloroform and the toluene more than one, surface solution concentration is 20.5～220.4g/100ml, and bottom solution concentration is 20.5～220.4g/100ml.Surface solution lubricate, bottom solution play fixedly surface solution.Dry back skin depth is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.
As shown in Figure 2, be provided with first Marking ring 5 in push rod 3 apart from the distal portion 400mm place of catheter block 1, be provided with the saturating X ray of second Marking ring, 6, the first Marking rings 5 and second Marking ring 6 at first Marking ring, the 5 far-ends 100mm place that is separated by, adopt platinum or iridium metals material to make.
As shown in Figure 3, the axis of the normal on the plane of the mouth of pipe of exchange hole 7 formation and extension 4 along distal direction in obtuse angle fast, make the mouth of pipe of quick exchange hole 7 for oval, the end tube wall of extension 4 near-ends and the far-end of push rod 3 are connected smoothly, and the radius of curvature in push rod 3 cross sections is identical with the radius of extension 4 bodys, and sacculus or support can be entered in the extension 4 by quick exchange hole 7 smoothly.
As shown in Figure 4, the cross section of push rod 3 is cambered surface, and push rod 3 is made up of the mandrel 15 of inside and the polymeric layers 14 that are coated on outside the mandrel 15.Mandrel 15 can adopt metal material rustless steel or Nitinol to make, can also adopt macromolecular material ultra-high molecular weight polyethylene or high-intensity engineering plastics to make, high-intensity engineering plastics are enhancement mode polyamide, Merlon, polyformaldehyde or polyphenylene oxide.Polymeric layer 14 adopts polymeric material nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material to make.
As shown in Figure 7, extension 4 is composited by trilaminate material, is respectively outer 9, intermediate layer 10 and the less internal layer 11 of coefficient of friction.The outer 9 quick exchange holes 7 from near-end are connected to form by three to ten sections pipe shafts that hardness reduces successively to distal end, the length of every section pipe shaft is 1-300mm, outer 9 pipe thickness is 0.03-0.2mm, adopt polymeric material nylon, polyurethane, polyetheramides resin, epoxy resin, polyetheramine or the polyamide material identical with polymeric layer 14 to make, polymeric layer 14 and outer 9 forms one and is connected, and identical with the hardness of outer 9 near-ends.
The specification of extension can be 4F, 5F, 6F or 7F, and the standard type guiding catheter specification of using that matches with it can be 5F, 6F, 7F or 8F.
In this utility model, mesh grid can be adopted two kinds of form of presentations, and as shown in Figure 5, mesh grid is that the round braided wires 12 of 0.015-0.1mm and thickness are that 0.01-0.05mm, width are that flat braided wires 13 mixed weavings of 0.03-0.2mm form by diameter.As shown in Figure 6, mesh grid is that 0.01-0.05mm, width are that the flat braided wires braiding of 0.03-0.2mm forms by thickness.
The sub-conduit that quick exchange guiding catheter of the present utility model uses as female catheter interior, can with the supporting use of common standard type guiding catheter, in percutaneous coronary intervention (pci), especially when complicated coronary artery pathological changes and trans-radial interventional therapy, under the situation that does not increase common standard type guiding catheter size, slotting deeply by quick exchange guiding catheter, improve the support force of the whole conduit system that female conduit and sub-conduit constitute.
Sacculus or support can enter the extension smoothly by quick exchange hole in the operation process, also can be used as a kind of aspirator simultaneously and use, and are used for the extraction of thrombosis, speckle and fragment.
The skin of the outer polymeric layer that coats of push rod mandrel and extension uses the identical polymeric material with excellent compatibility, links into an integrated entity, and can prevent that both junctions from rupturing.
The extension adopts trilaminate material compound, the intermediate layer is for becoming the mesh grid of PPI structure, skin is formed by connecting to the pipe shaft that distal end hardness reduces successively from quick exchange hole by three to ten sections, make that extension far-end head end is very soft and have certain motility, can avoid the damage to blood vessel, make operation process more smooth, the extension distal end adopts straight peen and is coated with hydrophilic coating, can make guiding catheter easily coaxial with the arteria coronaria mouth, minimizing improves success rate of operation to the damage of arteria coronaria mouth.
Claims (10)
1. one kind exchanges guiding catheter fast, comprise push rod (3), the far-end of push rod (3) is connected with the extension (4) of tubulose, it is characterized in that: described push rod (3) is coated with polymeric layer (14), extension (4) is provided with skin (9), polymeric layer (14) forms one with outer (9) and is connected, and nylon, Polyurethane, polyetheramides resin, epoxy resin, polyetheramine or polyamide material are adopted in described polymeric layer (14) and outer (9).
2. quick exchange guiding catheter according to claim 1 is characterized in that: described push rod (3) is by the mandrel (15) of inside and be coated on the outer polymeric layer (14) of mandrel (15) and form.
3. quick exchange guiding catheter according to claim 1 is characterized in that: the body of described extension (4) is by outer (9), intermediate layer (10) and internal layer (11) formation; Described skin (9) is connected to form by three to ten sections pipe shafts that hardness reduces successively from the near-end to the far-end, and the length of pipe shaft is 1-300mm, and the body wall thickness is 0.03-0.2mm; Described intermediate layer (10) is stainless steel silk or the nitinol alloy wire mesh grid of count 20-150 pixel/inch, and to far-end, establishment density is successively decreased successively from near-end; Described internal layer (11) adopts politef, polyethylene, nylon or nylon elastomer.
4. quick exchange guiding catheter according to claim 3 is characterized in that: described polymeric layer (14) is identical with the hardness of outer (9) near-end.
5. quick exchange guiding catheter according to claim 3, it is characterized in that: described mesh grid is that the round braided wires (12) of 0.015-0.1mm and thickness are that 0.01-0.05mm, width are that flat braided wires (13) mixed weaving of 0.03-0.2mm forms by diameter, or mesh grid is that 0.01-0.05mm, width are that the flat braided wires braiding of 0.03-0.2mm forms by thickness.
6. quick exchange guiding catheter according to claim 1, it is characterized in that: the mouth of pipe of described extension (4) near-end and push rod (3) junction is quick exchange hole (7), fast the axis of the normal on the plane that forms of the mouth of pipe of exchange hole (7) and extension (4) along distal direction in obtuse angle, the end tube wall of extension (4) near-end and the far-end of push rod (3) are connected smoothly; The radius of curvature in described push rod (3) cross section is identical with the radius of extension (4) pipe shaft.
7. quick exchange guiding catheter according to claim 1 is characterized in that: plane and extension (4) axis normal that the distal end mouth of pipe of described extension (4) constitutes, the external hydrophilic coating (16) that scribbles of the distal tube of extension (4).
8. quick exchange guiding catheter according to claim 7, it is characterized in that: described hydrophilic coating (16) is end table double-decker, and primer adopts the block thing of polyesters macromolecular material, polyethers macromolecular material or polyesters macromolecular material and polyethers macromolecular material; Described polyesters macromolecular material is polyurethane or Merlon; Described polyethers macromolecular material is polyether polyol or EU; Described skin-material adopts macromolecular material or natural macromolecular material and derivant thereof; Described macromolecular material is more than one of polyvinyl pyrrolidone, polyethylene glycol oxide, polypropylene oxide and poly N-vinyl lactams; Described natural macromolecular material and derivant thereof are chitin, chitosan or agarose; Described skin depth is 0.0001-0.025mm, and underlayer thickness is 0.0001-0.025mm.
9. quick exchange guiding catheter according to claim 7, it is characterized in that: the length of described hydrophilic coating (16) is 50-500mm.
10. quick exchange guiding catheter according to claim 8, it is characterized in that: the near-end of described push rod (3) is connected with catheter block (1), is equipped with heat-shrink tube (2) outside catheter block (1) and push rod (3) junction; Described push rod (3) is provided with first Marking ring (5) apart from the distal portion 400mm place of catheter block (1), be provided with second Marking ring (6) at first Marking ring (5) the far-end 100mm place that is separated by, first Marking ring (5) and second Marking ring (6) adopt platinum or iridium metals material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161770 CN203208504U (en) | 2013-04-02 | 2013-04-02 | Catheter capable of being switched and guided quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161770 CN203208504U (en) | 2013-04-02 | 2013-04-02 | Catheter capable of being switched and guided quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203208504U true CN203208504U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161770 Expired - Lifetime CN203208504U (en) | 2013-04-02 | 2013-04-02 | Catheter capable of being switched and guided quickly |
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| Country | Link |
|---|---|
| CN (1) | CN203208504U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105361943A (en) * | 2014-08-27 | 2016-03-02 | 上海安通医疗科技有限公司 | Catheter device for adjusting nerves |
| CN107096120A (en) * | 2017-06-01 | 2017-08-29 | 翎秀生物科技（上海）有限公司 | Coronary artery delivery conduit, conduit and device for heart intervention treating |
| CN109481828A (en) * | 2018-12-27 | 2019-03-19 | 肖恒军 | A kind of novel seal wire and its application |
| US10688277B2 (en) | 2015-09-23 | 2020-06-23 | Medtronic Vascular, Inc. | Guide extension catheter with perfusion openings |
-
2013
- 2013-04-02 CN CN 201320161770 patent/CN203208504U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105361943A (en) * | 2014-08-27 | 2016-03-02 | 上海安通医疗科技有限公司 | Catheter device for adjusting nerves |
| CN105361943B (en) * | 2014-08-27 | 2021-04-20 | 上海安通医疗科技有限公司 | Catheter device for regulating nerves |
| US10688277B2 (en) | 2015-09-23 | 2020-06-23 | Medtronic Vascular, Inc. | Guide extension catheter with perfusion openings |
| CN107096120A (en) * | 2017-06-01 | 2017-08-29 | 翎秀生物科技（上海）有限公司 | Coronary artery delivery conduit, conduit and device for heart intervention treating |
| CN109481828A (en) * | 2018-12-27 | 2019-03-19 | 肖恒军 | A kind of novel seal wire and its application |
| CN109481828B (en) * | 2018-12-27 | 2024-04-12 | 肖恒军 | Novel guide wire and application thereof |
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